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Integrated Regional Resource Plan - Toronto

Forecasting and Planning

Regional electricity planning is underway for the Toronto region. As part of this process, an Integrated Regional Resource Plan (IRRP) is expected to be completed in early Q3 2019.

This engagement initiative will provide interested parties with an opportunity to learn more about electricity planning activities undertaken for the Toronto region and offer input for consideration into the recommendations that will be outlined in the IRRP.

Regional system planning ensures a reliable supply of electricity to all of Ontario's 21 electricity planning regions and looks at the unique needs of each, and considers conservation, generation, transmission and distribution, and innovative resources to meet these needs. This engagement initiative focuses on the development of an IRRP for the Toronto region – broader bulk transmission or local distribution planning are out of scope and are addressed under separate planning processes.

Interested parties in this engagement initiative include but are not limited to:

  • Municipalities including the City of Toronto
  • Indigenous Communities
  • Consumers and service providers for the area  

All interested parties are invited to participate in this engagement initiative.

Toronto Region Working Group
- A Working Group consisting of the local distribution company in the region, the local transmitter and the IESO will be informed by this regional planning engagement initiative to seek and consider input that will help to align the electricity plan with local priorities. The Working Group consists of representatives from Toronto Hydro-Electric System Limited, the transmitter Hydro One Networks Inc., and the IESO.

All comments and enquiries in this engagement initiative can be directed to

Documents referenced on this page, but not posted, can be obtained by contacting with a link to the web page that lists the document, the document name and date, and advising whether it needs to be provided in an accessible format. Please allow a minimum of one business day for a response.

Related Information

Toronto Regional Planning Webpage

2018 Toronto Scoping Assessment and Toronto IRRP Terms of Reference

2017 Addendum to Central Toronto IRRP

2017 Hydro One Toronto Region Needs Assessment

2016 Hydro One Regional Infrastructure Plan

2015 Central Toronto IRRP

2015 Central Toronto IRRP - Appendices

Schedule of Activities



Expected Actions

August 15, 2019

IESO appreciates the participation in this engagement initiative. Subscribe to receive updates for this planning region here

 Engagement closed


August 9, 2019


  • 2019 Toronto Integrated Regional Resource Plan (IRRP) (Rev.)
  • 2019 Toronto IRRP Appendices
  • 2019 Toronto IRRP Responses to Stakeholder Feedback
  • Communication
  • Post responses to feedback
  • Post final IRRP               

July 25, 2019

Feedback due on draft IRRP recommendations

  • The Atmospheric Fund
  • City of Toronto
  • Toronto Resident
  • Toronto Resident

Feedback posted

July 11, 2019

Post and communicate proposed IRRP recommendations for final review

  • Communication
  • Draft IRRP Recommendations for Review and Comment

June 7, 2019

All feedback due

No feedback received        

May 22, 2019

Meeting Notes



Engagement Meeting (available in person and via webinar)

  • Presentation
  • Overview of electricity needs for Toronto region
  • Seek input on proposed recommendation(s) within IRRP

May 2, 2019

Communicate Toronto IRRP engagement initiative

  • Invitation to participate in engagement meeting on May 22

Interested parties should register in advance of the engagement meeting (see above)

February 2018

2018 Toronto Scoping Assessment and Toronto IRRP Terms of Reference

Final version was posted following a two week comment period

February 2018

2018 Toronto Scoping Assessment & Toronto IRRP Terms of Reference – Responses to Public Comments

Responses were posted to IESO website